Analysis

  • max time kernel
    109s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    30-06-2022 10:00

General

  • Target

    Re-2181718.exe

  • Size

    172KB

  • MD5

    be2d1ca01da2a323960e94dcae0d4696

  • SHA1

    a0a404c6ef2dcb77f65ddf072402eeeecdd1dc2e

  • SHA256

    f1ff4fbaa6991440428ea8b228268b6ba82595aa8cdbcf2e7bb8a69835753b31

  • SHA512

    883cb35116de50ee923fb5101aa1a6b3dea61897d96a73a51e1bc351dc7181f116dc1e290bf86946300b8998f53e106a064b73e1ebf3f503e1e5e65e2a5ed27c

Malware Config

Extracted

Family

blustealer

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    t.liaen@yandex.com
  • Password:
    @vZe#$#28990

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:1111

62.197.136.167:6606

62.197.136.167:7707

62.197.136.167:8808

62.197.136.167:1111

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • suricata: ET MALWARE Generic AsyncRAT Style SSL Cert

    suricata: ET MALWARE Generic AsyncRAT Style SSL Cert

  • suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)

    suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)

  • Async RAT payload 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Re-2181718.exe
    "C:\Users\Admin\AppData\Local\Temp\Re-2181718.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:872
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1300
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAxAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1748
    • C:\Users\Admin\AppData\Local\Temp\Jcsbrafiyvpxtqostory5m.exe
      "C:\Users\Admin\AppData\Local\Temp\Jcsbrafiyvpxtqostory5m.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1684
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1548
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAxAA==
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1804
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1748
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2004
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
        3⤵
          PID:1616

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    1
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Jcsbrafiyvpxtqostory5m.exe
      Filesize

      172KB

      MD5

      982f97ccf89f9d50dbc5d152c7139a50

      SHA1

      0ba6c448dd8566a1196e642ef1d834d55bf6e3e6

      SHA256

      f41360c7779e6656ec89fdfa40ae58b619d80dd27286802a9e902ab9dde19152

      SHA512

      c51127261b13e135e183c779c2bc10b5f43a2e27ccfd902829abc215beddd2070cf3739ac810201ae4eaf98dc9afab9b5e6923e97b1ca7bd0c7e661706c08fd1

    • C:\Users\Admin\AppData\Local\Temp\Jcsbrafiyvpxtqostory5m.exe
      Filesize

      172KB

      MD5

      982f97ccf89f9d50dbc5d152c7139a50

      SHA1

      0ba6c448dd8566a1196e642ef1d834d55bf6e3e6

      SHA256

      f41360c7779e6656ec89fdfa40ae58b619d80dd27286802a9e902ab9dde19152

      SHA512

      c51127261b13e135e183c779c2bc10b5f43a2e27ccfd902829abc215beddd2070cf3739ac810201ae4eaf98dc9afab9b5e6923e97b1ca7bd0c7e661706c08fd1

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
      Filesize

      7KB

      MD5

      4b8eb146b9cfcc863d7b1b79d2e01054

      SHA1

      7719681250173d5713fabe30f35ae202666857f7

      SHA256

      40506a492895d43dcfaf5963caf6a708d9fb2585e1f97ba6345e5e5c23326913

      SHA512

      a0c0f52c87afeae4890b60815175673a2f3988d74f927da7d8c53f948843f65b4cd3592ced06e81edd6f9f53612360525d4a7d21bc65c3d2cb9e2e6e9afc3839

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
      Filesize

      7KB

      MD5

      4b8eb146b9cfcc863d7b1b79d2e01054

      SHA1

      7719681250173d5713fabe30f35ae202666857f7

      SHA256

      40506a492895d43dcfaf5963caf6a708d9fb2585e1f97ba6345e5e5c23326913

      SHA512

      a0c0f52c87afeae4890b60815175673a2f3988d74f927da7d8c53f948843f65b4cd3592ced06e81edd6f9f53612360525d4a7d21bc65c3d2cb9e2e6e9afc3839

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
      Filesize

      7KB

      MD5

      4b8eb146b9cfcc863d7b1b79d2e01054

      SHA1

      7719681250173d5713fabe30f35ae202666857f7

      SHA256

      40506a492895d43dcfaf5963caf6a708d9fb2585e1f97ba6345e5e5c23326913

      SHA512

      a0c0f52c87afeae4890b60815175673a2f3988d74f927da7d8c53f948843f65b4cd3592ced06e81edd6f9f53612360525d4a7d21bc65c3d2cb9e2e6e9afc3839

    • C:\Users\Admin\AppData\Roaming\Tupbtqbro\Aeigqqh.exe
      Filesize

      172KB

      MD5

      b19f61228a003e36f8394f12017b207d

      SHA1

      e9ade60d53088c1c44d5b59555d86ccbe5c53ebf

      SHA256

      5dd7d8653a017ec9241b0e4e993d94d14a16c4b6d98b3f997b6642cb599df235

      SHA512

      94cc2e6413fd5424755aea4d30001bf49f9e63e3171a86ee70b09936b077885b36452266af29c98569f4975e76e5ad888409c5411876c5275251829b52bf30bd

    • \??\PIPE\srvsvc
      MD5

      d41d8cd98f00b204e9800998ecf8427e

      SHA1

      da39a3ee5e6b4b0d3255bfef95601890afd80709

      SHA256

      e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

      SHA512

      cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

    • \Users\Admin\AppData\Local\Temp\Jcsbrafiyvpxtqostory5m.exe
      Filesize

      172KB

      MD5

      982f97ccf89f9d50dbc5d152c7139a50

      SHA1

      0ba6c448dd8566a1196e642ef1d834d55bf6e3e6

      SHA256

      f41360c7779e6656ec89fdfa40ae58b619d80dd27286802a9e902ab9dde19152

      SHA512

      c51127261b13e135e183c779c2bc10b5f43a2e27ccfd902829abc215beddd2070cf3739ac810201ae4eaf98dc9afab9b5e6923e97b1ca7bd0c7e661706c08fd1

    • \Users\Public\3037384246424646303030333036443242464246463030303330\SQLite3_StdCall.dll
      Filesize

      59KB

      MD5

      d77b227a28a78627c2323cac75948390

      SHA1

      e228c3951f2a9fd0febfe07390633ab4f35727f4

      SHA256

      527ec201dcd7695bd9830eb82ab35a3986121de9ea156193834aed9d79223b82

      SHA512

      5627fbc8bbb98f644e21f101a68f0e0b07b87c264d00ea227286bed8ab6dd4ebf5114f03b632604f775ff93666a409a1a179a81ebfc9246956ba8150ff5b0587

    • \Users\Public\3037384246424646303030333036443242464246463030303330\sqlite3.dll
      Filesize

      585KB

      MD5

      5405413fff79b8d9c747aa900f60f082

      SHA1

      71caf8907ddd9a3a25d71356bd2ce09bd293bd78

      SHA256

      3e5a28ffde07ac661c26b6ccf94e64c1c90b1f25b3b24c90605aa922b87642eb

      SHA512

      2f09a30fc4da5166bd665210fefa1d44ce344f0ec6a37f127d677aeb3ca4fc0d09b7c9c1540f57da1e3449b7f588a1c61115395e965fa153d4baa5033266ed66

    • memory/872-61-0x0000000004810000-0x000000000485C000-memory.dmp
      Filesize

      304KB

    • memory/872-60-0x0000000008130000-0x000000000825C000-memory.dmp
      Filesize

      1.2MB

    • memory/872-55-0x00000000764C1000-0x00000000764C3000-memory.dmp
      Filesize

      8KB

    • memory/872-54-0x0000000000CC0000-0x0000000000CF0000-memory.dmp
      Filesize

      192KB

    • memory/1300-59-0x000000006F910000-0x000000006FEBB000-memory.dmp
      Filesize

      5.7MB

    • memory/1300-58-0x000000006F910000-0x000000006FEBB000-memory.dmp
      Filesize

      5.7MB

    • memory/1300-56-0x0000000000000000-mapping.dmp
    • memory/1548-73-0x0000000000000000-mapping.dmp
    • memory/1548-77-0x000000006F910000-0x000000006FEBB000-memory.dmp
      Filesize

      5.7MB

    • memory/1548-103-0x000000006F910000-0x000000006FEBB000-memory.dmp
      Filesize

      5.7MB

    • memory/1616-102-0x000000006F910000-0x000000006FEBB000-memory.dmp
      Filesize

      5.7MB

    • memory/1616-91-0x0000000000090000-0x000000000009E000-memory.dmp
      Filesize

      56KB

    • memory/1616-98-0x0000000000090000-0x000000000009E000-memory.dmp
      Filesize

      56KB

    • memory/1616-96-0x0000000000090000-0x000000000009E000-memory.dmp
      Filesize

      56KB

    • memory/1616-94-0x0000000000099C22-mapping.dmp
    • memory/1616-93-0x0000000000090000-0x000000000009E000-memory.dmp
      Filesize

      56KB

    • memory/1684-105-0x0000000004760000-0x0000000004824000-memory.dmp
      Filesize

      784KB

    • memory/1684-71-0x0000000001330000-0x0000000001360000-memory.dmp
      Filesize

      192KB

    • memory/1684-68-0x0000000000000000-mapping.dmp
    • memory/1748-115-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/1748-116-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/1748-62-0x0000000000000000-mapping.dmp
    • memory/1748-65-0x000000006F910000-0x000000006FEBB000-memory.dmp
      Filesize

      5.7MB

    • memory/1748-120-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/1748-117-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/1748-118-0x000000000040C75E-mapping.dmp
    • memory/1748-112-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/1748-66-0x000000006F910000-0x000000006FEBB000-memory.dmp
      Filesize

      5.7MB

    • memory/1748-113-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/1748-122-0x0000000000400000-0x0000000000412000-memory.dmp
      Filesize

      72KB

    • memory/1804-106-0x0000000000000000-mapping.dmp
    • memory/1804-110-0x000000006F910000-0x000000006FEBB000-memory.dmp
      Filesize

      5.7MB

    • memory/1804-109-0x000000006F910000-0x000000006FEBB000-memory.dmp
      Filesize

      5.7MB

    • memory/2004-81-0x0000000000400000-0x0000000000498000-memory.dmp
      Filesize

      608KB

    • memory/2004-83-0x0000000000400000-0x0000000000498000-memory.dmp
      Filesize

      608KB

    • memory/2004-90-0x0000000000400000-0x0000000000498000-memory.dmp
      Filesize

      608KB

    • memory/2004-104-0x0000000000400000-0x0000000000498000-memory.dmp
      Filesize

      608KB

    • memory/2004-86-0x0000000000400000-0x0000000000498000-memory.dmp
      Filesize

      608KB

    • memory/2004-84-0x0000000000403528-mapping.dmp
    • memory/2004-78-0x0000000000400000-0x0000000000498000-memory.dmp
      Filesize

      608KB

    • memory/2004-79-0x0000000000400000-0x0000000000498000-memory.dmp
      Filesize

      608KB